Prokop had admired Ralph Cole's playing when they shared the bill at the Grande Ballroom in Detroit, so he invited him to Toronto to be the band's guitarist.

Prokop and Hoffert assembled the rest of the group from friends, studio session musicians, and Toronto Symphony Orchestra members, and proceeded to make a demo recording.

Two days later they had a manager, Vinnie Fusco, from Albert Grossman's office, who overturned the MGM contract and made a deal with RCA Victor.

Lighthouse made its performing debut on May 14, 1969, at The Rock Pile in Toronto, introduced by Duke Ellington with the words, "I'm beginning to see the Light...house".

At the end of 1970, due to less than expected sales, Lighthouse was dropped from RCA and moved to Evolution in the US and GRT in Canada, recording at Toronto's Thunder Sound Studios.

[8] In between recording albums and touring 300 days a year, the band was involved in the first performances by a rock band with symphony orchestras, a collaboration with the Royal Winnipeg Ballet company, Ballet High, which toured across Canada,[9] and a CBC production of Prometheus Bound with actress Irene Worth.

With the exception of "No More Searching", written and sung by new sax player Dale Hillary, Prokop and Cole sang all the vocals and harmonies on the album.

[12] Prokop, Hoffert, Cole, and McBride reunited along with many of the Lighthouse alumni in September 1982 for a weekend of four large concerts at Ontario Place.

In 1992, the band reunited with a ten-member line-up which included founders Prokop, Hoffert, and Cole with McBride on vocals.

In 1998 the original master tapes of The Best of Lighthouse - Sunny Days Again were digitally re-mastered and released on CD by True North Records who also re-released Song of the Ages in 1999.

Paul Hoffert has continued his career as a film composer, winning a Genie Award in 1978 for his score for the cult-hit movie Outrageous!

; headed up the Ontario Arts Council from 1994 to 1997; created and was the Director of CulTech from 1992 to 2000, a Research Centre at York University, and has written five books exploring the intersection of culture and technology.

Prokop and Cole formed other bands with some success before hitting their stride in the advertising world and as record producers.

Saxophonist Howard Shore became the music director for Saturday Night Live and began a career in film composition, emerging as one of Hollywood's most sought after composers.

Bob McBride became a top studio session singer and was heard on numerous commercials but he suffered from drug abuse and serious illness, and died February 20, 1998, of heart failure in Toronto.

Arnie Chycoski, Don DiNovo, Keith Jollimore, Alan Wilmot, Dale Hillary, Freddy Stone, Pinky Dauvin, Joe Ambrosia and Skip Prokop are all deceased.

The horn section is made up of original member, trombonist Russ Little, Simon Wallis (saxophones and flute), Chris Howells (trumpet), and saxophonist Steve Kennedy who performed with the band at Ontario Place in 1982.

Lighthouse continues to perform and create innovative works including a reunion concert with the Edmonton Symphony Orchestra that was broadcast nationally, a tour of Brazil with an original multimedia stage show in collaboration with the Desrosiers Dance Theatre, and a series of concerts in which sections of the band performed in different locations across Toronto linked together by broadband cable.

Lighthouse songs have been used in films and covered by other artists including Three Dog Night, Shobha, and Carlos Santana.

Rap artist Akon has sampled "I'd Be So Happy" and Japanese rock stars Theatre Brook perform "One Fine Morning" in their stage show.

Prokop toured with Lighthouse throughout 2013 but was diagnosed with Type 2 Diabetes, then suffered more heart trouble requiring bypass surgery.